https://www.blick.ch/gesundheit/nicht-jedermanns-sache-aber-ist-blutwurst-der-neue-superfood-id4533702.html
http://www.coopzeitung.ch/Blutwurst_+Von+Rittern+geadelt
https://www.bbcgoodfood.com/howto/guide/all-you-need-know-about-black-pudding